Study on Stress-Strain Relationship of FRP-Confined Concrete Filled Steel Tubes

Abstract:

Article Preview

FRP-confined concrete filled steel tube may fully use the character of FRP-confined concrete and concrete filled steel tube. Based on the analysis of existing experimental data, the formula of ultimate bearing capacity of FRP-confined concrete filled steel tube is proposed. The mechanical behavior of FRP-confined concrete filled steel tube is mainly related to the equivalent confinement effect coefficient before the rupture of FRP. Based on the static equilibrium condition, the equivalent conversion section is adopted; taking as main parameter, the simplified stress-strain model of FRP-confined concrete filled steel tube is established. The predictions of the model agree well with test data.

Info:

Periodical:

Advanced Materials Research (Volumes 163-167)

Edited by:

Lijuan Li

Pages:

3826-3829

Citation:

F. Yu and P. Wu, "Study on Stress-Strain Relationship of FRP-Confined Concrete Filled Steel Tubes", Advanced Materials Research, Vols. 163-167, pp. 3826-3829, 2011

Online since:

December 2010

Authors:

Export:

Price:

$41.00

[1] Cai Shaohuai. The structure of concrete filled steel tube. The Publishing Company of People Communication, 2003, Beijing. (in Chinese).

[2] Tao zhong, Zhuang Jinping, Yu Qing. Mechanical behavior of stub columns of FRP-confined concrete-filled steel tubes. Industrial Construction, Vol. 35(9), 2005, pp.1-4. (in Chinese).

[3] Wang Qingli, Zhu Hefei, Gao Yifu. Constitutive relationship of concrete confined by circular CFRP-steel composite tube under concentrical load. Journal of Shenyang Jianzhu University(Natural Science), Vol. 23(2), 2007, pp.199-204. (in Chinese).

[4] Yu Feng, Niu Ditao. Bearing capacity of FRP-confined concrete column subjected to axial compression. Concrete, Vol. 3, 2007, pp.14-17. (in Chinese).

[5] Wang Qingli, Gu Wei, Zhao Yinghua. An experimental study on concentrically compressed concrete filled circular cfrp-steel composite tubular stub columns. China Civil Engineering Journal, Vol. 38(10), 2005, pp.44-48. (in Chinese).

DOI: https://doi.org/10.4028/www.scientific.net/kem.400-402.507

[6] Yu Feng, Niu Ditao, Xue Shengguang, Han Shaoyuan. Analysis on mechanical behavior of FRP-confined concrete filled steel tube. Journal of Harbin Institute of Technology, Vol. 39(2) , 2007, pp.90-93. (in Chinese).